Cutter.



. Painted oef. 7, |902'. N JOHNSON.

CUTTER.

No. 7|U,583.

(In Model.)

5 mm1/Ltda' I I @hmmag Erice.

ernst NOAK JOHNSON, OF SHEFFIELD, PENNSYLVANIA.

correa.

SPECFXCATON forming part of Letters ?atent No. 7lO,583, dated Gctober 7, 1902.

Application tiled February 25, 1902.

"n r/,ZZ whom, it mfr/y concern:

Be it known that l, NOAK JOHNSON, a citizen of the United States of America, residing at Sheffield, in the county of Warren and State of Pennsylvania, have invented certain new and useful Improvements in Cutters, of which the following is a specification.

This invention relates to cutting-machines for use on metal, and particularly to that class known as reciprocating cutters.

The object of the invention is to provide novel means for reciprocatingthe block which carries the cutter, whereby the power required for severing metal is minimized.

Furthermore, the object of the invention is to produce a cutter having two sets of knives acting independently to produce different results, one being employed for cutting hot metal and the other being used for cutting cold metal.

Furthermore, the object of the invention is to produce a cutting-machine in which an unusual movement of the block is obtained compared to the sweep or movement of the operating-handle.

Finally, the object of the invention is to produce a cutting-machine which will possess advantages in points of simplicity, strength, durability, and efficiency, proving at the saine time comparatively inexpensive to produce and sustain.

`With the foregoing and other objects in View the invention consists in the details of construction and in the arrangement and combination of parts, to be hereinafter more fully set forth and claimed.

ln describing the invention in detail rei'- erence will be had to the accompanyingdrawings, forming part of this specificatioii,wliei'e in like characters denote corresponding parts in the several views, and in which- Figure l is a View in elevation of my cutting-machine with the face-plate removed. Fig. 2 is a vertical sectional View of the blockreciprocating mechanism. Fig. 3 is a tranverse central sectional view of the cutter.

In the drawings, l denotes the base, having recesses 2, within which the ends of the arch 2L of the frame are anchored. The base may be of cast-iron; butto insure strength the arch should be constructed of wroughtiron in order that it may withstand the strain inci- Serial No. 95.526. (No model.)

dent to its use. Plates 3 are secured to the arch on each side and are cut away at the bottoms to form openings et, that access may be had to the cutting-blocks, to be hereinafter described. The plates 3 are also cutaway at the top to produce openings, which are covered by face-plates 5. The plates 3 on each side are cut away, as shown at 6, to produce a spacebetween the arch and face plates to receive the edges of the guides 7 of the operating mechanism. The face-plates 5 have vertical slots S, through which the ends of the shaft 9, which rotates the pinion l0, project and in which they move vertically. Ahaudle ll is secured to the shaft for rotating the said pinion. A link l2 is hung on a cross-pin 13, extending through the face-plates, and the lower ends of the link is flared. A segmental rack l-i is formed on the lower end of the link, and guide-plates 7, having cam-slots l5, are secured to the sides of thelink, acting as a guide for the shaft of the pinion. A second link, a duplicate of the one just described, is provided with similar guides, the said second link being inverted and having its lower end pivoted to the reciprocating plate 17, which carries the knives 18. Each of the segmental racks is engaged by the pinion, and the shaft rides in each of the cam-slots of the guides, and as the shaft is rotated in the direction of the arrow the racks will travel and increase the distance between the' pivots of the links, thus depressing the knife-plate, and a movement reverse to that indicated by the arrow elevates the knife-plate.

For use in cutting hot iron a knife 18 is secured to the knife-plate, and a second knife 19, with which it coacts, is secured to the base. For cutting cold iron the knives 2O 2l are provided, in which the edges are inclined and a draw effect is produced as the knife de-V scends, thereby increasing its efciency.

The construction, operation, and advantages will, it is thought, be understood from the foregoing description, it being noted that various changes may be made in the proportions and details of construction for successfully carrying the invention into practice without departing from its scope.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

IOO

l. In a cutter, a suitable base and arch, plates secured to the arch, face-plates secured to the first-named plates, a link pivotecl in the arch, a rack on the link, guides on the link, a second link having a rack and guide, a shaft operating` in the slots of the guides, and in slots in the faceplates, a pinion on the shaft meshing With the racks of the links, means for turning the shaft, a plate to which the second-named link is pivoted, knives carried by the plate and stationary knives on the base-plate as and for the purpose described.

2. ln a cutter a suitable base and arch, plates secured to the arch,faceplates secured to the first-named plates, a link pivoted in the arch, a rack on the link, guides on the link having cam-slots, a second link having a rack and guide, a shaft operating in the slots of the guides and in the slots of the faceplates, a pinion on the shaft meshing with the racks ofthe ends of the links, means for turning the shaft, a plate to which the secondnamed link is pivoted, knives carried by the plate and stationary knives with which the rst-named knives act, as and for the purpose described.

ln a cutter', a suitable base and arch, plates secured to the arch, face-plates secured to the first-named plates, a link pivoted in the arch, a rack on the link, a second link having a rack, a shaft, a pinion on the shaft, means for retainingT the pinion in engagement with the racks of the links, a plate reciprocated by the action of the links and pinion and aknife carried by the reciprocating plate, as and for the purpose described.

In testimony whereof I affix my signature, in the presence of'tWo Witnesses, this 21st (lay of February, 1902.

NOAK JOHNSON.

Vitnesses:

FRANK H. EAKIN, JOSEPH A. ScHoirInLD. 

